HiFi Mini Class A 12AU7 Tube Multi-Mix Headphone Amplifier Stereo Pre-Amp Board DC24V
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Features:
- It is a Pure Class A amplifier with excellent performance desgined by Douk Audio Studio. It brings you a powerful, dynamic and sweet TUBE SOUND from your headphones.
- Without any OP amp or IC in this circuit, but MOSFET Class A.
- The vacuum tube will emit red light in operation offering you different visual effects especially at night, and its mini size, compact design and tough PCB shell make it more elegant and fashionable.
- 6.35mm and 3.5mm headphone output can be used at the same time. In addition, it has output mute protection, which can protect your favorite headsets.
- It also can be used as a class A preamplifier with its preamp output interface.
- High Playability with a switch that can set it to 12 series or 6 series tube modules:
6 Series Available: 6DJ8/6922/6N11/E88CC/6H23...
12 Series Available: 12AU7/ECC8/5814/6189/B329/CV4003/ECC802S...
Specifications:
Working voltage: DC24V, 1.5A at least
Input sensitivity: 50mV
Gain: 32dB
Audio input: 3.5mm audio jack & Stereo L/R RCA
Audio output: 3.5mm headphone & 6.35mm headphone & Stereo L/R RCA
Input Impedance: 100KΩ
Output Impedance: 20Ω~600Ω
Frequency response: 10Hz-60KHz (±0.25dB)
Signal/Noise Ratio: >90dB
Dimension: W102? D102 ? H37.5 mm (4.02 ? 4.02 ? 1.48 in)
Net Weight: 310g
Notice:
1. We recommend to have it rest after 2-3 hours work for its large power that not suitable for a long time work.
2. Please keep away from some high-power sources of interference, such as monitors,audio speakers, mobile phones, WIFI and other electrical appliances.
3. Power switch Reset: if power switch is locked and can not be shut OFF or turned ON, you need to reset it by the following steps: deeply press and hold the switch and then turn it to left and right for 2 or 3 times, then release it, the switch will be reset. If not, you can repeat that method for 2-3 times again.
4. RCA output: it will automatically switch to RCA output after 6.35 headset being pulled out.
5. Normal boot requires about 10 seconds then It will have a normal sound output.
Package Included:
1? Headphone Amp( assembled)
1? 12AU7 Tube
1? Power Supply
